Build for Qt6 by default #129

Job	Run time
build (ubuntu-22.04, Debug, static, 5.15)	1m 8s
build (ubuntu-22.04, Debug, static, 6.6.0)	1m 25s
build (ubuntu-22.04, Debug, dynamic, 5.15)	1m 8s
build (ubuntu-22.04, Debug, dynamic, 6.6.0)	1m 29s
build (ubuntu-22.04, Release, static, 5.15)	44s
build (ubuntu-22.04, Release, static, 6.6.0)	48s
build (ubuntu-22.04, Release, dynamic, 5.15)	43s
build (ubuntu-22.04, Release, dynamic, 6.6.0)	1m 18s
build (windows-2022, Debug, static, 5.15)	5m 17s
build (windows-2022, Debug, static, 6.6.0)	3m 39s
build (windows-2022, Debug, dynamic, 5.15)	3m 28s
build (windows-2022, Debug, dynamic, 6.6.0)	3m 27s
build (windows-2022, Release, static, 5.15)	2m 24s
build (windows-2022, Release, static, 6.6.0)	2m 28s
build (windows-2022, Release, dynamic, 5.15)	2m 36s
build (windows-2022, Release, dynamic, 6.6.0)	2m 27s
build (macos-13, Debug, static, 5.15)	2m 29s
build (macos-13, Debug, static, 6.6.0)	2m 41s
build (macos-13, Debug, dynamic, 5.15)	4m 8s
build (macos-13, Debug, dynamic, 6.6.0)	3m 1s
build (macos-13, Release, static, 5.15)	1m 2s
build (macos-13, Release, static, 6.6.0)	1m 47s
build (macos-13, Release, dynamic, 5.15)	1m 59s
build (macos-13, Release, dynamic, 6.6.0)	2m 54s
build (ubuntu-22.04, Release, dynamic, 6.6.0, llvm, shiboken6-generator==6.6.0 pyside6==6.6.0)	1m 45s
	56m 15s

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